Mobeis a



Ni. A. HIRSCH.

SAFETY ENlVE'LOP. APPLICATION FILED Nov. 2s. I9I7.

Patented Nov. 25, 1919.

rre l Monnis A. Hrnscrr, orotnvntnnn; r11-iro.v `v

SAFETY-ENVELOP.

ramene.

and State of Giio, Vhave invented certainV new and useful improvements in Safety'- Envelop's; and l. do hereby declare the Vfollowing to be a full, clear, and exact description of the inventiom such as( will enable others skilled in the art to which itappertains'to maire and use the'same.

This invention relates to improvements in safety envelops.

The object of this invention is to improve the construction of safety envelops so as to provide an envelop capable after once being sealed of not being opened without detection. Y

A still further object of this invention is to provide an envelop so constructed as to provide the sealing ap with means whereby the envelop may be readily opened by an authorized person. n n

A still further object of this invention is to improve the construction of safety en-v velops and to provide theenvelop with a sealing ap which, when sealed and the stamp applied thereto, is held sealed and 4against opening by .an unauthorized person without detection. Y

A still further object of this invention is toV provide a safety envelop having a sealing flap which is equipped with a novel opening strip, which strip is so relnforced as to render it capable of being readily opened in a quick and'reliable manner.

A still further object of this invention is Vto provide an envelop of this .character,

which will be simple, practical and comparatively inexpensive in construction and one that can-be manufactured and sold ata low cost. 1

lVith these and other objects in view, the invention consists in the novel combination and arrangement of parts hereinafter more fully described and set forth in the claims hereto appended. l

In the drawing:

Figure l is a plan view of the blank of my improved safety envelop. l-

F ig. 2 is a plan view illustrating the envelop partly foldedand ready to be sealed.

Fig. 3 is a plan view illustrating the envelop sealed and ready to be mailed.`

on the line 4-4 of Fig. 3.

v'Speecation of Letters Patent. Patient Apiiivaticri aiean'oveiibr 28571917. serial no. zoenen Fig. 4 isa transverse sectional view taken edite-t. es, relie.`

ILilre' numerals ofreference designate'cori responding drawing. l n e Referring to the drawing, .the-numeraly indicates the blanlrfromfy which-'my ini-b proved envelop is Constructediandr this blanlt consists of paper suitable vforthe purpose. The blanlrboinprisesa rectangularbody 6 having formed integrally with one edge'k a top flap 7 and upon the opposite edgel of the parts in all `the vfigures of the body 6' is a sealing liapor 'tongue'8, and the '4 opposite side edges of the body are provided with side flaps 9. @ne side flap 9 has an inwardly curved edge 10 while the edge of` the other side flap is substantially convex, as at 11, and this side flap is provided adjacent its edge and on one side with a suitable adhesive 12, the purpose of which will be hereinafter more fully described.

The sealing flap 8 is provided adjacent its point of juncture with the body 6 With-a spaced longitudinally extending perforation 13, which perforation defines an opening tongue 14. The ends of the opening tongue are extended laterally beyond the opposite.

side edges of the sealing flap 8 to provide l reinforcing strips 15. The reinforcing strips are adapted toV be bent back upon themselves and have their ends in. overlapping engagement and sealed together by the adhesive 16 carried on the inner side of one of the strips so as to reinforce the-tongue 14 to malte it of a greaterfthiolrness than the body or sealing f1ap'8 to permit the'lap 8 tobe readily opened to allow the contents of the envelop to be removed.

The top flap 7 is provided with a suitable adhesive 17 and the sealing tongue 8 is Pro.-

vided with adhesive 18 to permit the Venvelop to be effectively sealed prior to its use.

In operation or use, the side flaps 9 are folded inwardly on the line 19 and the edges of the side flaps 9 overlap and the adhesive 12 is moistened and sealed to the upper side of the `other side flap, as illustrated in Fig.

2. rlhe top flap is then sealed through the medium of the. adhesive' 17 against the outer side of the side flaps 9 and the pocket forthe letter or article is formed. The sealing tongue is then folded upwardly against the side flaps 9 on the line 20 and the adhesive 18 is moistened and this is sealed to the side flaps 9 and the extreme free edge 21 of the sealingilap 8 abuts thel edge of the flap 7 and the outer side ofthe sealing flap isthe address side. A stamp, designated A in the drawing, is lthen, applied to and' bridges the abuttingedges of the sealing flap 8 andV top Hap 7 so as to prevent the envelop from be-V ing unsealedlwithout detection. Y

VVV20 When it is desired to open the envelop, it is only necessary to grasp. one endv of the sealing tongue lll 'and apply pressure thereto and rip it from the' sealing'tongue 8 by virtue of the perforations 13, afterv whichl the contents may ybefrezuiljly taken from the pocket, it'being Vunderstood that the strips 15 are Vfirst folded back upon themselves and sealed in the manner described to reinforcev the opening tongue 14C `to, permit it to be of increased thickness, ytlrus-'yreinforcing and 'strengthening the strip to renderit capable flap carriedy thereby provided with two spaced lines of perforations extending the :full-length thereof -Yand defining a tearing strip, theV tearing strip beingVY provided at each end with an Vintegral reinforcing strip, said reinforcing strips being folded inwardly Yupon the tearing strip in overlapping.rel`ation'and having their ends secured together Y so as Vto form' a continuous reinforcing member positioned upon the inner face of said` tearing strip and extend-ing the full length 1 thereof to facilitate 4tearing Vof said stripl from the flap.' y In testimony in presence of twoKA witnesses.

i 'Witnessesf y A. S. CARTWRIGHT,

vE. A.r GRnooRy,

whereof I aliX my signature MoRBIsYAQ Hiasoifi. 

